Only on IBX should we set the limiting factor to 25 unconditionally for dual-channel mode, on CPT/PPT 25 only applies when the lvds refclock is 100MHz. Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index f623f97..cb3e23f 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5408,7 +5408,7 @@ static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc, if (is_lvds) { if ((intel_panel_use_ssc(dev_priv) && dev_priv->lvds_ssc_freq == 100) || - intel_is_dual_link_lvds(dev)) + (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev))) factor = 25; } else if (is_sdvo && is_tv) factor = 20; -- 1.7.10.4